Aha Trivia Stuff Everyone Should Know
Aha Trivia: Stuff Everyone Should Know · ahatrivia.com/mb-space-exploration-76cf92185aca

What does Newton's first law say a moving object does without a force?

It keeps moving in a straight line.

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  1. It curves toward the ground
  2. It slows to a stop
  3. It keeps moving in a straight line ✔

Why: Without a net force, motion stays constant in speed and direction. This is called inertia.

Huh, didn't know that: Without a net force, motion stays constant in speed and direction. This is called inertia.

The dad joke
Inertia is a real stay-put kind of attitude.
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References

Answer: It keeps moving in a straight line. Without a net force, motion stays constant in speed and direction. This is called inertia.

  1. Newton's laws of motion en.wikipedia.org/wiki/Newton%27s_laws_of_motion
    A body remains at rest, or in motion at a constant speed in a straight line, unless it is acted upon by a force.
    Checked 2026-11-07.

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